How many Calories are in one serving of Reese’s Puffs cereal?

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Presentation transcript:

How many Calories are in one serving of Reese’s Puffs cereal? Warm-Up 5/5/15 How many Calories are in one serving of Reese’s Puffs cereal? How many joules of energy is this? 1 Cal = 4184 J

Out of 54 Used old ScanTron +2 50% - Just answer 75% - Answer and work Test Corrections Out of 54 Used old ScanTron +2 50% - Just answer 75% - Answer and work Attach to ScanTron Deadline May 11th, 2015

Underwood Family Farms Wednesday, May 13th Donations FIELD TRIP!!! Underwood Family Farms Wednesday, May 13th Donations D or F? Cannot attend. Come to tutoring three times this week to get a permission slip. Due tomorrow!

Soap Lab Check Extra Credit – Lab section (20%) Objective and Introduction Terms and Concepts – defined Summarized Procedure Lab Data (pH readings) Post-lab Questions Extra Credit – Lab section (20%) Lab report – criteria posted on website (Blog post 5/4/15)

Looked at how many Calories you use to walk up a flight of stairs. Yesterday Looked at how many Calories you use to walk up a flight of stairs.

What happens when we “burn” Calories? https://www.youtube.com/watch?v=C8ialLlcdcw

A food Calorie is 1000 calories. A calorie is the amount of heat needed to raise the temperature of 1 g of water by 1oC. A food Calorie is 1000 calories.

DT = change in temperature Specific Heat q = mCDT q = heat m = mass (g) C = specific heat DT = change in temperature specific heat – the amount of heat to raise 1g of the substance by 1oC.

Specific Heat Calculate how much heat (in calories) 32.0 g of water absorbs when it is heated from 25oC to 80oC. How many joules is this? Specific heat of water = 1.00 cal/goC

Pg. 510 #3 and 4 Will need Table 17.1 on Pg. 508 Will stamp tomorrow. Practice Pg. 510 #3 and 4 Will need Table 17.1 on Pg. 508 Will stamp tomorrow.

Get permission slip signed! Homework Get permission slip signed! Extra Credit Bring in an empty soda can.